Question

b) 120% de 50 =
c) 12% de 50 =
d) 30% de 20 =
f) 45% de 40 =
g) 10% de 230 =

Answer 1

Resposta:

50 de 120% = 6000/100 =  60

12% de 50= 600/100 = 6

30% de 20= 600/100 = 6

45% de 40= 1800/100 = 18

10% de 230= 2300/100 = 23

Explicação passo a passo:

Answer 2

regra de três:

$\large\boxed{\begin{array}{l} \rm\dfrac{120\%}{100\%} = \dfrac{x}{50} \\ \\ \rm \: 100x = 120 \times 50 \\ \\ \rm \: 100x = 6000 \\ \\ \rm \: x = \dfrac{6000}{100} \\ \\ \boxed{ \rm{x = 60}} \checkmark\end{array}}$

$\large\boxed{\begin{array}{l} \rm\dfrac{12\%}{100\%} = \dfrac{x}{50} \\ \\ \rm \: 100x = 50 \times 12 \\ \\ \rm \: 100x = 6000 \\ \\ \rm \: x = \dfrac{600}{100} \\ \\ \boxed{ \rm{x = 6}} \checkmark\end{array}}$

$\large\boxed{\begin{array}{l} \rm\dfrac{45\%}{100\%} = \dfrac{x}{40} \\ \\ \rm \: 100x = 40 \times 45 \\ \\ \rm \: 100x = 1800 \\ \\ \rm \: x = \dfrac{1800}{100} \\ \\ \boxed{ \rm{x = 18}} \checkmark\end{array}}$

$\large\boxed{\begin{array}{l} \rm\dfrac{30\%}{100\%} = \dfrac{x}{20} \\ \\ \rm \:100x = 20 \times 30 \\ \\ \rm \: 100x = 600 \\ \\ \rm \: x = \dfrac{600}{100} \\ \\ \boxed{ \rm{x = 6}} \checkmark\end{array}}$

$\large\boxed{\begin{array}{l} \rm\dfrac{10\%}{100\%} = \dfrac{x}{230} \\ \\ \rm \: 100x = 230 \times 10 \\ \\ \rm \: 100x = 2300 \\ \\ \rm \: x = \dfrac{2300}{100} \\ \\ \boxed{ \rm{x = 23}} \checkmark \end{array}}$